Heart beat analysis device and method

ABSTRACT

The present invention disclosed relates to heart beat analysis device and method capable of measuring the heart beats of an individual in physical exercise, notifying the individual of a suitable exercise amount with messages or warning sounds, and allowing the individual to listen to the radio or music.

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] The present invention relates to heart beat analysis device andmethod, and more particularly to heart beat analysis device and methodcapable of measuring the heart beats of an individual in physicalexercise, notifying the individual of a suitable exercise amount withmessages or warning sounds, and allowing the individual to listen to theradio or music.

[0003] 2. Reference to Related Patents Applications

[0004] U.S. Pat. No. 6,036,653 Pulsimeter

[0005] U.S. Pat. No. 5,650,982 Pulsimeter provided with or without apedometer

[0006] U.S. Pat. No. 5,640,965 Pulsimeter capable of properly evaluatingamount of exercise at arbitrary time

[0007] U.S. Pat. No. 5,539,706 Pulsimeter provided with or without apedometer

[0008] U.S. Pat. No. 5,509,422 Clinical thermometer with pulsimeter

[0009] U.S. Pat. No. 5,190,047 Photoelectric pulsation type pulsimeter

[0010] U.S. Pat. No. 4,929,825 Means for detecting damage to the cardconnecting the photosensor and main body pulsimeter

[0011] U.S. Pat. No. 4,715,384 Pulsimeter

[0012] U.S. Pat. No. 4,572,207 Pulsimeter for vehicles

[0013] U.S. Pat. No. 4,120,296 Pulsimeter

[0014] 3. Description of Related Art

[0015] Various physical exercises and, in particular, jogging being doneby individuals with different ages and health factors become effectiveonly in a range of heart beat rates required for the individuals.

[0016] That is, in case that individual heart beat rates do not drop toa specific low level, physical exercises can have a slight influence onthem, whereas, in case that the individual heart beat rates go beyond aupper limit level, the exercises can have a harmful influence on themdefinitely. Accordingly, people who start physical exercise performexercise amounts suitable for them according to their physical statusand their usual exercise amounts. The most basic of the exercise amountmeasurements measure the number of heart beats of an individual inexercise, and compare the measured number with a standard table, so thathe measures his physical exercise as weak, medium, or strong forhimself.

[0017] A conventional heart beat analysis device requires its userhimself to measure his heart beats based on existing data and to adjustthe exercise strength accordingly.

[0018] Further, it has a problem in that he can not analyze whatexercise is suitable for himself unless he records the heart beatmeasurement data by himself.

[0019] Furthermore, it has another problem in that individuals inphysical exercise get easily bored during the exercise due to itssimplicity.

SUMMARY OF THE INVENTION

[0020] In order to solve the above problems, it is an object of thepresent invention to provide heart beat analysis device and method whichprevent individuals from excessive exercises by sending warning signalsto the individuals in case of exceeding predetermined exercise amountsthrough individuals' heart beat measurements.

[0021] Further, it is another object of the present invention to provideheart beat analysis device and method which allow individuals inphysical exercise to listen to the radio or music in order to preventthem from easily getting dull.

[0022] Furthermore, it is a further object of the present invention toprovide heart beat analysis device and method which can store the heartbeat changes of individuals in physical exercise, analyze heart beatchanges according to individuals' exercise states by transferring thechanges to personal computers (PCs) later, and simultaneously measureexercise effects.

[0023] In order to achieve the above objects, the present inventioncomprises a unit for measuring heart beats of a user in physicalexercise; and a unit having a heart beat signal processing unit, and foranalyzing heart beat signals measured from the heart beat measurementunit, comparing the analyzed heart beat signals with reference values,outputting warning messages when in excessive exercise, and outputtingguidance messages when in insufficient exercise.

[0024] Further, the present invention comprises steps of (1) inputtingand storing reference values as to the number of heart beats; (2)measuring heart beats of a user in physical exercise; and (3) comparingthe heart beat measurement value measured in step (2) with the referencevalues as to the number of heart beats, and outputting a warning signalin case that the heart beat measurement value is below a lower limitvalue or above an upper limit value of the reference values.

[0025] Digital music files to be retrieved in the above are files havingextensions of mp3, ra, mid, rmi, asf, wav, and so on.

BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above objects and other advantages of the present inventionwill become more apparent by describing in detail a preferred embodimentthereof with reference to the attached drawings, in which:

[0027]FIG. 1 is a view for showing a structure of a heart beat analysisdevice according to an embodiment of the present invention;

[0028]FIG. 2 is a block diagram for showing an internal structure of adigital music retrieval unit of FIG. 1;

[0029]FIG. 3 is a view for showing an internal structure of the heartbeat analysis device of FIG. 1;

[0030]FIG. 4 is a flow chart for showing a process of the heart beatanalysis device of FIG. 1;

[0031]FIG. 5 is a flow chart for showing a heart beat measurement dataanalysis subroutine of the flow chart of FIG. 4; and

[0032]FIG. 6 is a flow chart for showing a process for analyzing heartbeat measurement data in a personal computer.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0033] Hereinafter, the present invention will be described in moredetail with reference to the accompanying drawings showing a preferableembodiment of the present invention.

[0034]FIG. 1 is a block diagram for schematically showing a structure ofa heart beat analysis device according to an embodiment of the presentinvention.

[0035] As shown in FIG. 1, the present invention includes a digitalmusic retrieval unit 100 and a heart beat measurement unit 200. Further,a personal computer(PC) 300 shown in FIG. 1 is provided to receive andanalyze heart beat information of a user in physical exercise.

[0036] The digital music retrieval unit 100 stores and outputs digitalmusic as well as receives and outputs radio broadcasts.

[0037] Further, the digital music retrieval unit 100 performs thefunctions of receiving and storing heart beat information of a user inphysical exercise and outputting warning messages as to whether theexercise is insufficient or excessive. Each component of the digitalmusic retrieval unit 100 of performing such functions will be describedin more detail in FIG. 2.

[0038] The digital music retrieval unit 100 may be manufactured to behung around the neck of a user by a string like a stop watch. Further,it may be manufactured to be attached on the front of the user'ssporting coat. Furthermore, it may be manufactured to be worn on thewrist like a wrist watch in one body with the heart beat measurementunit 200.

[0039] In the meantime, the digital music retrieval unit 100 may berealized to have only a digital music retrieval function, to have only afunction of receiving radio broadcasts, or to have only a function ofoutputting warnings or messages as to excessive or insufficientexercises to a user by receiving, storing, and analyzing heart beatinformation measured from the heart beat measurement unit 200.

[0040] Next, the heart beat measurement unit 200 is connected to thedigital music retrieval unit 100 in a wire or wireless way, and performsa function of measuring heart beats of a user in physical exercise andtransferring the measured heart beats to the digital music retrievalunit 200. The internal structural components of the heart beatmeasurement unit 200 will be described in more detail below withreference to FIG. 3. Such heart beat measurement unit 200 may bestructured to be carried on a wrist like a wrist watch.

[0041] The personal computer 300 is connected to the digital musicretrieval unit 100 by an interface as a communication unit forexchanging data, and performs functions of transferring digitalizedmusic files to the digital music retrieval unit 100, measuring user'sexercise effects by receiving and analyzing heart beat information of auser in physical exercise which is stored in the digital music retrievalunit 100, and preparing an exercise schedule for improving the exerciseeffects. A data analysis is performed for a change rate of the number ofheart beats by time (second/minute/hour), a change rate of the number ofheart beats by unit time (day/month/year), a suitable exercise directionproposal based on a change of the number of heart beats, a proposal ofthe objective heart beats (a proper exercise amount) based on ages, sex,heights, and weights, an indication of an exercise improvement degreebased on the change of the number of heart beats, a total amount ofcalories consumed during exercise, what percent of the total consumedcalories amount comes from the body fat, and so on.

[0042] The personal computer 30 for carrying out such functions is ageneral personal computer which carries out heart beat measurement dataanalysis by using a certain program realized to analyze heart beats.

[0043] Next, a description will be made on each component of the digitalmusic retrieval unit and operations of each component thereof withreference to FIG. 2.

[0044]FIG. 2 is a block diagram for showing the structural component ofthe digital music retrieval unit 100 out of the entire structuralcomponents of FIG. 1 according to an embodiment of the presentinvention.

[0045] As shown in FIG. 2, the digital music retrieval unit according tothe present invention has a control unit 21, an output unit 22, adigital-analog/analog-digital (D/A-A/D) converter 23, a storage unit 24,a radio receiver 25, a key input unit 26, a PC connection unit 27, and aheart beat signal receiving unit 28. The control unit 21 includes amicrocomputer 21 a and a digital signal processor (DSP) 21 b. The outputunit 22 has an indication unit 22 a and an audio output unit 22 b.

[0046] Hereinafter, operations of the digital music retrieval unit willbe described in detail.

[0047] The heart beat signal receiving unit 28 receives heart beatinformation measured from the heart beat measurement unit and transfersit to the control unit 21.

[0048] At this time, the control unit 21 stores the number of heartbeats received into a storage unit 24, analyzes the number of heartbeats received, compares it with a predetermined comparison value, andoutputs warning messages by using characters or voices to a user. Atthis time, the warning messages may be outputted in characters throughthe indication unit 22 a of the output unit 22 or in voices through theaudio output unit 22 b.

[0049] For an instance, the maximum number of heart beats is calculatedbased on a user's age. At this time, an arithmetic formula used is “themaximum number of heart beats=220−age”.

[0050] Next, the objective number of heart beats is calculated. Theobjective number of heart beats means a reference value range which canevaluate what extent of heart beats corresponds to a high-strengthexercise, a medium-strength exercise, or a low-strength exercise.

[0051] An arithmetic formula used at this time is “the objective numberof heart beats=the maximum number of heart beats*% exercise strength”.

[0052] In the exercise strengths, the reference values can beestablished by:

[0053] High-strength: 85%˜100%

[0054] Medium-strength: 70%˜85%

[0055] Low-strength: 50%˜70%.

[0056] Accordingly, the control unit 21 inputs the number of heart beatsof a user(an individual in physical exercise) from the heart beatmeasurement unit 200, compares the inputted number of heart beats withthe calculated objective number of heart beat, and judges that theexercise corresponds to the low-strength, medium-strength, orhigh-strength.

[0057] Further, in general, physical exercise begins with thelow-strength for an initial exercise start(a timer can be used to judgeif the physical exercise is in an initial state), moves to themedium-strength for main exercise, and back to the low-strength forfinal exercise. Accordingly, the control unit 21 outputs a warning soundif a physical exercise strength abruptly increases to themedium-strength or to the high strength in the beginning of exercise.The control unit 21 judges if the main exercise is being carried outwith the medium strength. The control unit 21 outputs a warning signalto ask for speeding up more if judged as the low strength, and foradjusting exercise pace if judged as the high strength. Further, thecontrol unit 21 judges if the final exercise is being carries out withthe low strength, and asks for speeding down more if judged as themedium strength.

[0058] At this time, such exercise patterns can be selected by a user,or provided as one instance, and, in case of a user's option, the heartbeat analysis unit shows various options to the user to select one.

[0059] The control unit 21 may indicate on the indication unit 22 a oroutput in voices by using the audio output unit 22 b whether a presentexercise state is the initial exercise state, main exercise state, orfinal exercise state, as well as whether the exercise is being carriedout with the low, medium, or high strength.

[0060] Further, the control unit 21 may display the number of heartbeats received on the indication unit 22 a or output it in voice. Thecontrol unit 21 may display present time on the indication unit 22 a byreceiving the present time from a timer, and display exercise period oftime on the unit 22 a.

[0061] The control unit 21 digital-signal-processes and retrievesdigital music if a digital music retrieval mode is selected through thekey input unit 26, so that a user in physical exercise can listen to themusic he wants.

[0062] The control unit 21, if a radio reception mode is selectedthrough the key input unit 26, signal-processes and outputs radiosignals received from the radio receiver 25.

[0063] In the meantime, the PC connection unit 27 is connected to anexternal personal computer, enabling data communications.

[0064] The control unit 21 out of the above components includes themicrocomputer 21 a and the digital signal processor(DSP) 21 b.

[0065] The microcomputer 21 a, if a user selects the radio receptionmode or digital music retrieval mode by using the key input unit 26,changes the modes of the digital music retrieval unit 100 based on aselected signal. If a user inputs a set value, for example, an age, forhis physical exercise through the key input unit 26, the microcomputer21 a calculates the maximum number of heart beats and stores the setvalue and the maximum number of heart beats calculated in the storageunit 24, accordingly.

[0066] Further, the microcomputer 21 a uses the preset maximum number ofheart beats of a user which is stored in the storage unit 24, calculatesthe objective number of heart beats, compares the objective number ofheart beats with a heart beat measurement signal inputted from theexternal heart beat measurement unit 200, outputs warning messages basedon a user's exercise amount or messages as to an insufficient exerciseamount and the like, and stores in the storage unit heart beatmeasurement data received from the heart beat signal receiving unit 28.

[0067] The DSP 21 b performs a digital signal process and retrievesdigital music files. If a user selects the digital music retrieval modethrough the key input unit 26, the control unit 26 reads out digitalmusic files stored in the storage unit 24 and transfers them to the DSP21 b constructed in the control unit 21. The digital music files aredigital-signal-processed by the DSP 21 b, converted into analog signalsby the D/A-A/D converter 23, and outputted to the audio output unit 22b. At this time, the digital music files may be realized for a user toselect for a retrieval, or realized to be retrieved based on an exercisestate. That is, it may be realized to provide a slight slow temp musicfor a low-strength exercise, a fast temp music for a medium- andhigh-strength exercise, and music for relaxing soul and body for a finalexercise.

[0068] The output unit 22 includes the indication unit 22 a for a visualinterface with a user and an audio output unit 22 b for an auditoryinterface. An LCD display device may be employed as the indication unit22 a.

[0069] The key input unit 26 has keys for retrieval, volume control,fast forward (FF), rewind (REW), mode setting (MODE), hold (HOLD), andplural characters and numbers. Here, the mode setting key allows a userto select and adjust a digital music retrieval mode, radio broadcastreception mode, heart beat measurement reference setting mode, and PCdata communication mode.

[0070] If the digital music retrieval mode is selected by the modesetting key, the digital music retrieval unit is converted into thedigital music retrieval mode, if the radio broadcast reception mode isselected, the digital music retrieval unit is converted to output radiobroadcasts received through the radio receiver 25, if the heart beatmeasurement reference setting mode is selected, the digital musicretrieval unit is converted into a mode for setting reference conditionsfor measuring heart beats by a user, and, if the PC data communicationmode is set, a conversion is made to enable data exchanges to becontrolled between the digital music retrieval unit and a PC. Such modechanges can be outputted to the indication unit 22 a constructed in theoutput unit 22 to be selected, and a mode can be directly selected bythe mode setting key to carry out a corresponding function.

[0071] In the heart beat measurement reference setting mode as statedabove, upper and lower limit values of heart beats to be measured inphysical exercise are set in order that the values can be used asreferences for outputting warnings or messages, and a selection is madeon whether a heart beat measurement value is stored or not, which is acondition for storing a heart beat measurement value in a memory.Further, the objective number of heart beats can be automatically set byenabling an age, sex, height, and weight of a user, that is, anindividual in physical exercise to be inputted, and, if physicalexercise is not carried out within a set period of time, messages areproduced. Furthermore, setting is made to measure a total amount ofcalories consumed in physical exercise and what percent of the totalcalories consumed comes from the body fat.

[0072] In the PC data communication mode as stated above, a menu isselected which can download digital music files to the radio receiverand digital music retrieval unit from the personal computer 300, and amenu is selected which can upload to the personal computer 300 the heartbeat data stored in the digital music retrieval unit 100. A user cantransfer necessary digital music files to the radio receiver and digitalmusic retrieval unit 100 from the personal computer, as well as transferthe heart beat measurement data during physical exercise from thestorage unit 24 of the digital music retrieval unit 100 to the personalcomputer 300 in order to analyze an effect of the physical exercise inmore detail.

[0073] Communication interfaces such as RS-232C, RJ-11, RJ-45, or thelike can be used as the communication interfaces built in the PCconnection unit 27 to communicate data with the personal computer 300,and communications based on infrared LAN cards or infrared communicationports are available as well.

[0074] The heart beat signal receiving unit 28 receives heart beatmeasurement data from the heart beat measurement unit 200 in a wire orwireless way. In case of wire, data is received through a certain cable,and, in case of wireless, receptions are carried out by using a wirelesssignal such as an RF signal and the like.

[0075]FIG. 3 is a block diagram for showing an internal structure of theheart beat measurement unit 200 of FIG. 1.

[0076] As shown in FIG. 1, the heart beat measurement unit 200 accordingto the present invention includes first and second sensors 31 and 32 formeasuring minute current flowing in a user (an individual in physicalexercise) or heart beats and converting the measurement into an electricsignal, a band-pass filter unit 33 for extracting necessary signals fromsignals measured from the first and second sensors 31 and 32, anamplification unit 34 for amplifying the signals filtered in theband-pass filter unit 33, a modulation unit 35 for modulating theamplified signals into a signal necessary for transmission, and atransmission unit 36 for transmitting the modulated signal to thedigital music retrieval unit 100.

[0077] Conventional sensors such as pressure sensors like strain gauges,minute current measurement sensors having positive and negative values,or photo sensors may be used as the first and second sensors 31 and 32.

[0078] The heart beat measurement unit 200 extracts effective signalsthrough the band-pass filter unit 33 from signals detected by the firstand second sensors 31 and 32, and amplifies the extracted signal to acertain level through the amplification unit 34. In case that theamplified signal is transferred in a wireless way, the heart beatmeasurement unit 200 converts the amplified signal into an RF signalthrough a modulation process for transmission, and, in case of theamplified signal is transferred in a wire way, the heart beatmeasurement unit 200 transfers the amplified signal to the radioreceiver and digital music retrieval unit 100 through a wire.

[0079]FIG. 4 is a flow chart for showing a process of the digital musicretrieval unit having a heart beat measurement function according to anembodiment of the present invention.

[0080] Before carrying out heart beat measurement and music retrievalfunctions, the control unit 21 initializes the system. Such aninitializing process initializes the microcomputer 21 b built in thecontrol unit 21 and a register built in the internal of the DSP 21 b.Next, the control unit 21 initializes a state register of the radioreceiver and an internal state register of the D/A-A/D converter (S100).

[0081] Next, the control unit 21 judges if there is a key manipulationsignal (S101). Here, the key manipulation signal is to detect if thereis a signal based on a key manipulation such as retrieval, stop, volumecontrol, fast forward, rewind, mode setting, hold, and so on, as basicmanipulation keys. If there is a key manipulation signal, the controlunit 21 carries out a corresponding key function.

[0082] In case that the key manipulation signal is a signal for the modesetting, the control unit 21 judges if the mode is a digital musicretrieval mode first (S102). The control unit 21 judges if heart beatsare measured in case of the digital music retrieve mode as a result ofthe judgment of the step S102 (S104). If the heart beats are measured asa result of the judgment of the step S104, the control unit 21 carriesout a heart beat measurement material analysis subroutine (S107), andjudges if a key manipulation signal is inputted after the step S107(S108), and carries out a corresponding key manipulation signal if thereis the key manipulation signal (S109).

[0083] Next, if different from the digital music retrieval mode as aresult of the step S102, the control unit 21 judges if the keymanipulation signal is for a radio reception mode (S103), moves to thestep S104 in case of the radio reception mode as a result of thejudgment, and carries out the steps after the step S104.

[0084] Next, if different from the radio reception mode as a result ofjudgment of the step S103, the control unit 21 judges if a referencevalues related to the heart beat measurement are inputted as a heartbeat measurement-related manipulation mode (S105), if the referencevalues related to the heart beat measurement are inputted as a result ofjudgment, the control unit 21 receives and stores information related tocorresponding heart beat measurements. Here, the inputted referencevalues related to the heart beat measurements are upper and lower limitvalues measured during physical measurements, whether or not measureddata is stored in a memory, information on age, sex, height, and weightof a person to be measured, whether or not messages are outputted incase that physical exercise is not carried out within a set time period,an data output as to a calories consumption during the physicalexercise, and so on (S110). The reference values can be automaticallyset by inputting physical information such as age, sex, height, andweight of a person to be measured in the above.

[0085] If the key manipulations in the step S110 are completed, thecontrol unit 21 stores the data values related to the heart beatmeasurements in the storage unit of the digital music retrieval unit, inorder for the person to use an analysis of heart beat changes measuredduring the physical exercise.

[0086]FIG. 5 is a flow chart for showing the heart beat measurementmaterial analysis subroutine of FIG. 4.

[0087] As shown in FIG. 5, if in the heart beat measurement as a resultof judgment in the step S104 of FIG. 4, the control unit 41 judges ifthe heart beat signal is inputted from a measurement unit (S201). If theheart beat signal is inputted, the control unit 21 stores the inputtedheart beat information (S202), compares the inputted heart beatinformation with the upper and lower limit values of the preset heartbeat measurement reference values (S203), and, if out of the range ofthe values, the control unit outputs warning sounds or messages (S204)and returns to the step S107 for a next process.

[0088]FIG. 6 is a flow chart for showing a process in a personalcomputer for analyzing user's exercise information stored in the digitalmusic retrieval unit.

[0089] As shown in FIG. 6, the control unit 21 judges if a signal forrequesting a transfer of a digital music file is inputted from thedigital music retrieval unit (S301). If there is no request of thedigital music file transfer as a result of the judgment, the controlunit 21 performs the step S303, and, if there is the request of thedigital music file transfer, the control unit 21 transfers the digitalmusic file to the digital music retrieval unit (S302).

[0090] Next, the control unit 21 judges if there is a signal ofrequesting an heart beat measurement data analysis (S303). The controlunit 21 ends its process if there is no signal of requesting the heartbeat measurement data analysis as a result of the judgment of the stepS303, and downloads the heart beat measurement data from the storageunit of the digital music retrieval unit to the personal computerthrough the PC connection unit if there is a signal of requesting theheart beat measurement data analysis (S304).

[0091] The downloaded heart beat measurement data is stored in thestorage unit, and analyzed by a certain program for analyzing the heartbeat measurement data (S305). If the analysis is completed, the controlunit 21 outputs the analyzed result values through an output unit suchas a certain printer, monitor, and so on, stores the result values, andends its process (S306).

[0092] Through the analysis process carried out in the process steps ofFIG. 6, changes of the number of heart beats by time(second/minute/hour), changes of the number of heart beats by unitperiod of time (day/month/year), a suitable exercise amount based on thechanges of the number of heart beats, the objective number of heartbeats based on age, sex, height, and weight (a suitable exerciseamount), a total calories amount consumed in physical exercise, a rateof used body fat to the total calories consumed, and so on, are analyzedfor a user (an individual in physical exercise).

[0093] The present invention has an effect of preventing a user inphysical exercise from becoming easily dull during the exercise, andallows the user to set his suitable exercise amount. Further, thepresent invention has an effect of preventing the user from excessiveexercise by transferring a warning signal to the user in case that theuser exceeds the set exercise amount, offering a right exercise amountby analyzing the changes of heart beats based on a user's exercise stateas well as measuring an exercise effect, by storing the changes of heartbeats of the user in physical exercise and downloading the storedchanges of heart beats to a personal computer later.

What is claimed is:
 1. A heart beat analysis device, comprising: meansfor measuring heart beats of a user in physical exercise; and meanshaving a heart beat signal processing unit, and for analyzing heart beatsignals measured from the heart beat measurement means, comparing theanalyzed heart beat signals with reference values, outputting warningmessages when in excessive exercise, and outputting guidance messageswhen in insufficient exercise.
 2. The heart beat analysis device asclaimed in claim 1, wherein the heart beat measurement means and theheart beat signal processing unit are connected in a wire or wirelessway.
 3. The heart beat analysis device as claimed in claim 1, furthercomprises a heart beat material analysis unit for receiving heart beatinformation from the heart beat signal processing unit, measuring auser's exercise effect by analyzing the received heart beat information,and preparing an exercise schedule for improving the exercise effect. 4.The heart beat analysis device as claimed in claim 3, wherein the heartbeat material analysis unit analyzes at least one of a change degree ofthe number of heart beats by time, a change degree of the number ofheart beats by unit time period, a proposal of a suitable exercisedirection based on the change of the number of heart beats, a proposalof the objective number of heart beats based on at least one of age,sex, height, and weight, an indication of an exercise improvement degreebased on the change of the number of heart beats, a total caloriesamount consumed in physical exercise, a percentage amount of the totalconsumed calories amount used from body fat.
 5. The heart beat analysisdevice as claimed in claim 1, wherein the heart beat signal processingunit stores digital music files, and, if the user selects a digitalmusic file retrieval mode, retrieves and outputs the digital music filesstored.
 6. The heart beat analysis device as claimed in claim 5, whereinthe heart beat signal processing unit retrieves a music filecorresponding to an exercise state in retrieving the digital musicfiles.
 7. The heart beat analysis device as claimed in claim 1, whereinthe heart beat signal processing unit is equipped with a radio receiver,and, if the user selects a radio reception mode, receives and outputs aradio signal.
 8. The heart beat analysis device as claimed in claim 1,wherein the heart beat measurement means includes: a sensor unit formeasuring the heart beats; a band-pass filter for extracting effectivesignals for measuring the heart beats from signals detected from thesensor unit; an amplification unit for amplifying the signals extractedfrom the band-pass filter; and a transmission unit for transmitting theamplified signals to an external.
 9. The heart beat analysis device asclaimed in claim 3, wherein the heart beat measurement means includes: asensor unit for measuring the heart beats; a band-pass filter forextracting effective signals for measuring the heart beats from signalsdetected from the sensor unit; an amplification unit for amplifying thesignals extracted from the band-pass filter; and a transmission unit fortransmitting the amplified signals to an external.
 10. The heart beatanalysis device as claimed in claim 5, wherein the heart beatmeasurement means includes: a sensor unit for measuring the heart beats;a band-pass filter for extracting effective signals for measuring theheart beats from signals detected from the sensor unit; an amplificationunit for amplifying the signals extracted from the band-pass filter; anda transmission unit for transmitting the amplified signals to anexternal.
 11. The heart beat analysis device as claimed in claim 7,wherein the heart beat measurement means includes: a sensor unit formeasuring the heart beats; a band-pass filter for extracting effectivesignals for measuring the heart beats from signals detected from thesensor unit; an amplification unit for amplifying the signals extractedfrom the band-pass filter; and a transmission unit for transmitting theamplified signals to an external.
 12. The heart beat analysis device asclaimed in claim 1, wherein the heart beat signal processing unitincludes: a heart beat signal reception unit for receiving heart beatmeasurement data from the heart beat measurement means; a storage unitfor storing the heart beat signal data; an output unit for outputtingcharacters and audio; and a control unit for, if the heart beatmeasurement signal is inputted from the heart beat signal receptionunit, comparing the received heart beat signal with the referencevalues, and, if a corresponding result value is out of the referencevalue, outputting an audio signal or character messages through theoutput unit.
 13. The heart beat analysis device as claimed in claim 3,wherein the heart beat signal processing unit includes: a heart beatsignal reception unit for receiving heart beat measurement data from theheart beat measurement means; a storage unit for storing the heart beatsignal data; an output unit for outputting characters and audio; and acontrol unit for, if the heart beat measurement signal is inputted fromthe heart beat signal reception unit, comparing the received heart beatsignal with the reference values, and, if a corresponding result valueis out of the reference value, outputting an audio signal or charactermessages through the output unit.
 14. The heart beat analysis device asclaimed in claim 5, wherein the heart beat signal processing unitincludes: a heart beat signal reception unit for receiving heart beatmeasurement data from the heart beat measurement means; a storage unitfor storing the heart beat signal data and digital music files; anoutput unit for outputting characters and audio; and a control unit for,if the heart beat measurement signal is inputted from the heart beatsignal reception unit, comparing the received heart beat signal with thereference values, and, if a corresponding result value is out of thereference value, outputting an audio signal or character messagesthrough the output unit, and, if the control unit is in a digital musicretrieval mode, outputting an audio signal by performing a digitalprocess as to the digital music files stored in the storage unit. 15.The heart beat analysis device as claimed in claim 7, wherein the heartbeat signal processing unit includes: a radio receiver for receiving aradio broadcast signal; a heart beat signal reception unit for receivingheart beat measurement data from the heart beat measurement means; astorage unit for storing the heart beat signal data; an output unit foroutputting characters and audio; and a control unit for, if the heartbeat measurement signal is inputted from the heart beat signal receptionunit, comparing the received heart beat signal with the referencevalues, and, if a corresponding result value is out of the referencevalue, outputting an audio signal or character messages through theoutput unit, and, if in a radio reception mode, receiving and outputtingradio broadcasts.
 16. The heart beat analysis device as claimed in claim14, wherein the control unit includes: a microcomputer for comparing theheart beat measurement data with the reference values and outputtingwarning and guidance messages; and a digital signal processing unit forretrieving the digital music files stored in the storage unit.
 17. Aheart beat analysis method, comprising steps of: (1) inputting andstoring reference values as to the number of heart beats; (2) measuringheart beats of a user in physical exercise; and (3) comparing the heartbeat measurement value measured in step (2) with the reference values asto the number of heart beats, and outputting a warning signal in casethat the heart beat measurement value is below a lower limit value orabove an upper limit value of the reference values.
 18. The heart beatanalysis method as claimed in claim 17, further comprising steps of: (4)receiving and storing digital music files; (5) operating in any one of aradio reception mode, digital retrieval mode, and heart beatmeasurement-related information setting mode according to a user'sselection mode; (6) judging if heart beat measurement data is inputtedfrom an external in case that the radio reception mode or digitalretrieval mode is selected in step (5); (7) re-inputting and storingcorresponding heart beat measurement reference values in case that theheart beat measurement-related information setting mode is selected instep (5); and (8) comparing the inputted heart beat measurement valuewith the reference values as to the number of heart beats in case thatthe heart beat measurement data is inputted in step (6), and outputtinga warning signal in case that the heart beat measurement value is belowthe lower limit value or above the upper limit value of the referencevalues.
 19. The heart beat analysis method as claimed in claim 18,further comprising steps of: (9) connecting to an external personalcomputer, and transferring the received heart beat measurement data tothe personal computer for an analysis; and (10) outputting and storingthe data analyzed in the personal computer.
 20. The heart beat analysismethod as claimed in claim 19, wherein, as the reference values as tothe number of heart beats in step (1), the upper and lower limit valuesof at least one of the heart beats during physical exercise, age, sex,height, and weight are inputted.
 21. The heart beat analysis method asclaimed in claim 19, wherein the step (9) includes analyses to a changedegree of the number of heart beats by time, a change degree of thenumber of heart beats by unit time period, a suitable exercise amountbased on the change of the number of heart beats, an exercise effectbased on the change of the number of heart beats, consumed caloriesduring the physical exercise, and a percentage of body fatdecomposition.